单甲基肼与亚硝酰钌硝酸根配合物的反应动力学  

Reaction Between Monomethylhydrazine and Nitrosylruthenium Nitrato Complexes

作　　者：张宇[1] 郑卫芳[1] 卞晓艳[1] 晏太红[1] 鲜亮[1] 左臣[1] 张柏青[1] 迪莹[1] 

机构地区：[1]中国原子能科学研究院放射化学研究所,北京102413

出　　处：《核化学与放射化学》2010年第1期8-12,共5页Journal of Nuclear and Radiochemistry

摘　　要：研究了单甲基肼(MMH)浓度、酸度、温度及预处理时间等对钌预处理效果的影响。采用溶剂萃取法研究了RuNO硝酸根配合物与MMH的反应动力学,75℃下该反应的表观速率方程为:r=Kc6.38(RuNO(Ⅲ)).c2.60(MMH)c-0.88(HNO3)。反应速度随着MMH浓度增加而加快,随着HNO3浓度增加下降。75℃下,料液经MMH预处理2 h,Ru的分配比显著降低,预处理效果明显。The influence of monomethylhydrazine（MMH） concentration, acidity, temperature and heat preservation time on decontamination of ruthenium（Ru） have been studied in the paper. By solvent extraction method, a reaction rate equation of the system studied is obtained as follows： r= Kc6.38 （RuNO（ Ⅲ ）） c2.60 （MMH） c-0.88 （HNO3）. The reaction rate increases with the increase of MMH concentration, while decreases with the increase of nitric acid concentration. The Ru distribution coefficient decreases obviously by 2 h pretreatment with the system of 0.1 mol/L MMH and 0. 2 mol/L HNO3 at 75 ℃. By this way, the extractable Ru content decreases, and the effect of pretreatment is obvious.

关 键 词：单甲基肼 钌 预处理 速率方程 

分 类 号：O643.1[理学—物理化学]